The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 1991
Filed:
Oct. 12, 1990
Applicant:
Inventor:
Horst Gravemann, Osnabrueck, DE;
Assignee:
Kabel und Metallwerke, Osnabrueck, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22F / ;
U.S. Cl.
CPC ...
148-2 ; 148 / ;
Abstract
Method of making a copper alloy to be used as a mold for continuous casting and comprising from 0.05% to 0.4% zinc; from 0.02% to 0.3% magnesium; from 0.02% to 0.2% phosphorus; all percentages by weight; the remainder being copper, and inevitable impurities; the alloy is cast and hot worked possibly followed by quenching and cold working with at least 10% deformation; the alloy is then annealed from 1 to 6 hours at a temperature from 300.degree. to 550.degree. centigrade; and finally cold worked with at least 10% deformation.